If u already have a kit- Get prokit, if u are stock-bodied, get sportlines. The sportlines IMO look better, but it took me a while to get used to the drop, but it might do the same with the pro kit. I have 17's and I love my sportlines and the aggressive, stance. If your kit is good quality, it can hold up to minor scraping, I've been stupid and actually hit a drop off b/c I didn't pay attention. Thought for sure front was cracked, got out, nada. As long as u don't hit something at a nice speed, u should be kewl. Sorry for rambling.